Takes time to get used to
Once you figure out how to get the fill design to transfer onto your nail, it's a great product. When I first got it, it frustrated me to no end but then I finally got it and now I want to use it all the time.
Patience is key with this product and if it doesn't work the first couple times, try it a different way and you will eventually get the hang of it. :)
Quick quick quick
There are 3 secrets to getting this thing to work properly 1. use pure acetone not regular nail polish remover 2. you have to be quick if you wait to long to apply the design the surface will dry and the design wont transfer 3. Try to use the actual Konad polishes the color pay off is usually better, although it will work with regular polish (tip: use a nail file to "rough-up" the stamper every once and a while, helps with the design transfer)